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近年来,随着技术的发展使得随钻高分辨率电成像测井成为可能。它受不规则井眼影响小,能取得不受钻井液侵入影响的井周电成像数据。现场测试表明,优化的、井下压缩的实时成像测井技术可以用于提取构造信息,更高分辨率的电成像技术可用于沉积相分析。因此,地质和钻井工程师可以通过对其资料分析,在现场进行地质导向工作,确定最佳井眼位置,控制钻头方位,指导钻头穿过目的层位,同时,避免或降低钻遇对生产有不利影响层位的风险;实时地识别断层、井眼垮塌等钻井风险状况,降低钻井风险;保持井眼稳定。本文从优化井眼轨迹、规避钻井风险两方面进行阐述。
In recent years, along with the development of technology, high-resolution logging imaging while drilling is possible. It is less affected by irregular boreholes and can produce well-weekdage imaging data that is unaffected by drilling fluid intrusion. Field tests show that optimized downhole compression real-time imaging logging technology can be used to extract structural information and higher resolution electrical imaging techniques can be used for sedimentary facies analysis. Therefore, geology and drilling engineers can conduct geosteering work on the site by analyzing their data to determine the optimal wellbore position, control the drill bit orientation, and guide the drill bit through the target formation, while avoiding or reducing the risk of drilling encountering production Affecting the risk of horizon; real-time identification of faults, borehole collapse and other drilling risk conditions, reduce drilling risk; maintain wellbore stability. This article elaborates from optimizing well trajectory and avoiding drilling risk.